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e922f9785c
* libiberty.texi: (Top level): Add syncodeindex pg. Add @dircategory and @direntry directives. Add @finalout. (many nodes): Lose the next,prev,up pointers on the @nide line. (Using, Supplemental Functions, Replacement Functions): Fix markup. (Functions): Move around, to allow makeinfo to build the manual without next,prev,up pointers in thye node lines. (Licenses): Fix typos. * index.c, rindex.c, strchr.c, strerror.c, strrchr.c, strstr.c, strtol.c, xatexit.c, xexit.c, xmalloc.c: Fix spelling and markup. * functions.texi: Regenerate. * copying-lib.texi: Lose the next,prev,up pointers on the @node line. From-SVN: r45847
44 lines
990 B
C
44 lines
990 B
C
/* Simple implementation of strstr for systems without it.
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This function is in the public domain. */
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/*
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@deftypefn Supplemental char* strstr (const char *@var{string}, const char *@var{sub})
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This function searches for the substring @var{sub} in the string
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@var{string}, not including the terminating null characters. A pointer
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to the first occurrence of @var{sub} is returned, or NULL if the
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substring is absent. If @var{sub} points to a string with zero
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length, the function returns @var{string}.
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@end deftypefn
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*/
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/* FIXME: The above description is ANSI compiliant. This routine has not
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been validated to comply with it. -fnf */
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char *
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strstr (s1, s2)
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char *s1, *s2;
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{
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register char *p = s1;
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extern char *strchr ();
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extern int strncmp ();
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#if __GNUC__==2
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extern __SIZE_TYPE__ strlen ();
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#endif
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register int len = strlen (s2);
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for (; (p = strchr (p, *s2)) != 0; p++)
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{
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if (strncmp (p, s2, len) == 0)
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{
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return (p);
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}
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}
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return (0);
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}
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